Window construction



May 20, 1941. v. B. DOMECKI WINDOW CONSTRUCTION Filed June l6 1939 114Il ,l

Amm,

Patented May 20, 1941 UNITED STATES PATENT OFFICE WINDOW CONSTRUCTIONVincent B. Domeck, Chicago, Ill.

Application June 16, 1939, Serial No. 279,520

2 Claims.

The present invention relates to a window construction and moreparticularly to nov'el latching and retaining means whereby the slidingsashes may be conveniently raised and lowered and maintained in anydesired position. The invention comprehends a novel latching and lockingmechanism controlled or operable from the inside of the window and soconstructed and arranged that each sash may be selectively raised andlowered and locked in any predetermined position of adjustment in eitheror both directions of travel.

The novel latching and locking mechanism comprises aA star or toothedwheel having teeth or projections adapted lto seat in or engage withnotches provided in one or both side rails of the slidable sashes,cooperating latching members so arranged with respect to the star ortoothed wheel as to prevent or permit raising or lowering of the sash,and a manually operable means for controlling the latching members so asto permit manual selective raising or lowering of the sash, and to lockthe sash in any desired open or closed position.

A further novel feature of my window construction is the provision ofmounting the slidable sashes in a sub-frame which is hinged or pivotedto the main frame of the window, in such manner that the sashes andsub-frame may be swung inwardly and washed from the interior of thebuilding.

Further objects, advantages and capabilities will be apparent from thefollowing description and the disclosure in the drawing, or are inherentin the device.

In the drawing:

Fig. 1 is a view in front or side elevation of the window.

Fig. 2 is an enlarged fragmentary View in horizontal cross section takenin a plane represented by the line 2 2 of Fig. 1.

Fig. 3 is a view in vertical cross section taken on the line 3-3 of Fig.2.

Fig. 4 is a View in vertical cross section taken in a plane representedby the line 4--4 of Fig. 5, but showing the operative parts in sideelevation.

Fig. 5 is a view in vertical cross section taken on the line 5-5 of Fig.4.

Fig, 6 is a View in horizontal cross section taken on the line 6-5 ofFig. 4.

Referring more particularly to the disclosure in the drawing, the novelWindow comprises a main frame I having an auxiliary or sub-frame 2carrying the slidable sashes 3 and 4. The subframe is hinged or pivotedto the main frame at 5, 5, and provided with a lock or latch 6permitting this sub-frame and the sashes to be swung inwardly forconvenience in washing, repair and replacement of the glass. The windowis shown as provided with a desired trim and sill 1, with the sub-frameprovidedwith a sealing strip 8, preferably of rubber or other yieldablesealing material. In order to maintain the slidable sashes in relativelyclose fitting sealing relation with the sub-frame 2, the inventioncomprehends a metal plate 9 and a parting strip A formed of yieldable orresilient rust-resisting metal. The channel formed by the plate A,parting strip 9 and exterior plate B, is adapted to conformably receivea side rail Ill of the slidable sashes and to provide a weather tightseal by reason of the resiliency of the metal.

The novel latching and locking mechanism for the slidable sashescomprises complementary members carried by the sub-frame 2 and the sashrails III. In the disclosed embodiment, the metal plate 5 is suitablysecured to the sub-frame and this plate and sash rail III are providedwith aligned openings II for receiving a tooth I2 of a star or toothedwheel I3. The teeth I2 and the openings II are so spaced and relatedthat each sash may be quickly raised or lowered, as the occasion arises.

As clearly shown in Fig. 4, a pair of star or toothed wheels I3 aremounted in a housing I4 in such manner that one controls'verticalmovement of the upper sash 3 and the other a similar movement of thelower sash 4. Each wheel I3 is mounted on a shaft I5 carrying a sprocketor ratchet wheel I6 so that a raising or lowering of the sash willrotate the star wheel I3 and its respective ratchet wheel I6, unlessthat star wheel is locked against rotation. In the illustrativeembodiment shown in Fig. 4, the mechanism for controlling rotation ofthe ratchet and star wheels comprises a pair of pawls or dogs I1 and I8,each pivotally mounted upon a stub shaft I9 journalled between spacedplates C, and provided with a latching tooth 20 adapted to be receivedintermediate spaced teeth 2| on the ratchet wheel and when inengagement, preventing the ratchet wheel from rotating in one direction.

Each dog or latch is provided at its upper end with a projection ortooth 22 adapted to be received within a, slot 23 or 23a in a U-shapedoperating lever 24 slidable in the housing I4 and manually controlledand shifted by a handle or knob 25. The rear face of the upper end ofeach dog or pawl Il and I8 is notched to sealt a compression spring 26which tends to force the projection or tooth 22 outwardly, and when aslot 23 or 23a, is in alignment with this projection, the latter isforced into the slot and the tooth 20 of the dog or pawl engages thesprocket or ratchet wheel and locks this wheel against rotation in onedirection of movement.`

An examination of thelocation of the slots 23 and 23a in Fig. 6 of thedrawing will make it apparent that intermediate the ends of these slotsis a locking position in which the projection or tooth 22 of each dog isspring-pressed or forced into its respective notch and the ratchet wheelis locked against rotation in either direction by the teeth 20, 20. Inthis View, the upper Wheel, a spring engaging said pawls and tending toforce the pawls into seating engagement with the ratchet fwheel, aprojection at the end of each pawl, and a manually operated member forcontrolling the seating engagement of the pawls whereby to selectivelylatch the ratchet, and toothed wheels against rotation in either desireddirection or to lock said wheels and sash against movement in bothdirections of travel, said member having a pair of arms each providedwith a slot adapted to receive the projection on the end of one of saidpawls when the slots are moved into a position in which one or the otheris in or outer end of the pawl is engaging againstthe inner side of thearm 21, while the upper end of the inner pawl is seating in the slot 23.As'

the lever is shifted sidewise or to the left in Fig. 6, at the instantboth pawls are in registry with the slots 23 and 23a, the spring willforce thesev pawls into locking engagement with the star Wheel and thewindow will be held against vertical movement. When but one of the pawlsor dogs engages the sprocket or ratchet wheel, that Wheel is preventedfrom rotating in one direction but is permitted to rotate in theopposite direction as will be evident from Fig. 5, and the window may bemanually raised or lowered.

It will be evident that the novel latching mechanism may be provided atone side of the window frame where the window is small, or one may besecured in each side jamb of the frame as shown in Fig. 1. Thi-s is amatter of choice or controlled by the size and weight of the sas/hes.

Having thus disclosed the invention, I claim:

1. In mechanism including a toothed wheel mounted for rotation in laWindow frame for latching and retaining a slidable sash in a desiredposition in either direction of its travel in the frame, means to lockthe sash against movement when in either an open or Closed position, andcomprising a ratchet wheel secured to said toothed wheel, a pair ofpawls adapted to selectively or jointly engage the teeth of the ratchety alignment with its respective projection at which time the springforces the pawl .having its projection in alignment with a slot, intolatching engagement with the ratchet Wheel, or into a position in whichboth slots are aligned with the projections at which time iboth of saidpawls are moved into latching engagementI by the action of the spring. y

2. In mechanism for controlling the raising and lowering of a slidablesash having a side rail provided with spaced notches and a toothed wheelmounted for rotation in the window frame, a ratchet wheel rotatable withthe toothed wheel, a pair of pawls associated with the ratchet wheel insuch manner that each pawl is adapted to lock the ratchet wheel againstrotation in one direction and to permit its rotation in fthe oppositedirection, a spring tending to force the pawls into Seating engagementwith the ratchet wheel, a manually slidable U-shaped operating lever Yhaving spaced arms adapted to engage and selectively retain eitherdesired pawl out oi" engagement with the ratchet wheel, and a slotprovided in each arm so that when the leve-r is slid into a position inwhich both the slots are aligned With the pawls, the spring forces bothpawls into engagement with the ratchet wheel so as to lock the ratchetwheel, toothed Wheel and sash against movement.

VINCENT B. DOMECKI.

